[trhway]

a well known Ukranian dog - a small breed one https://en.wikipedia.org/wiki/Patron_(dog)

>What is the activation weight of a landmine?

Several kilograms. Children trigger the mines. So a large or a medium dog would usually too.

Given the amount of work to be done after the current war, i'd bet on mass use of flying and ground drones with bomb detectors.